vikaschenny/prometheus_oracle_exporter

Prometheus Oracle Database exporter

Prometheus Oracle Exporter

A Prometheus exporter for Oracle.

The following metrics are exposed currently. Support for RAC (databasename and instancename added via lables)

• oracledb_exporter_last_scrape_duration_seconds
• oracledb_exporter_last_scrape_error
• oracledb_exporter_scrapes_total
• oracledb_uptime (days)
• oracledb_session (view v$session system/user active/passive)
• oracledb_sysmetric (view v$sysmetric (Physical Read Total IO Requests Per Sec / Physical Write Total IO Requests Per Sec Physical Read Total Bytes Per Sec / Physical Write Total Bytes Per Sec))
• oracledb_sysstat (view v$sysstat (parse count (total) / execute count / user commits / user rollbacks))
• oracledb_waitclass (view v$waitclass)
• oracledb_tablespace (tablespace total/free)
• oracledb_asmspace (Space in ASM (v$asm_disk/v$asm_diskgroup))
• oracledb_interconnect (view v$sysstat (gc cr blocks served / gc cr blocks flushed / gc cr blocks received))
• oracledb_recovery (percentage usage in FRA from V$RECOVERY_FILE_DEST)
• oracledb_redo (Redo log switches over last 5 min from v$log_history)
• oracledb_cachehitratio (Cache hit ratios (v$sysmetric)
• oracledb_up (Whether the Oracle server is up)
• oracledb_error (Errors parsed from the alert.log)
• oracledb_error_unix_seconds (Last modified Date of alert.log in Unixtime)
• oracledb_services (Active Oracle Services (v$active_services))
• oracledb_parameter (Configuration Parameters (v$parameter))
• oracledb_query (Self defined Queries in Configuration File)

*TOOK VERY LONG, BE CAREFUL (Put the Metrics below in a separate Scrape-Config):

• oracledb_tablerows (Number of Rows in Tables)
• oracledb_tablebytes (Bytes used by Table)
• oracledb_indexbytes (Bytes used by Indexes of associated Table)
• oracledb_lobbytes (Bytes used by Lobs of associated Table)

The Oracle Alertlog file is scanned and the metrics are exposed as a gauge metric with a total occurence of the specific ORA. You can define your own Queries and execute/scrape them

Installation

Ensure that the configfile (oracle.conf) is set correctly before starting. You can add multiple instances, e.g. the ASM instance. It is even possible to run one Exporter for all your Databases, but this is not recommended. We use it in our Company because on one host multiple Instances are running.

Prometheus Configuration

scrape_configs:
  - job_name: 'oracle-short'
    metrics_path: /metrics
    static_configs:
      - targets:
        - oracle.host.com:9161
    relabel_configs:
     - source_labels: ['__address__']
       target_label: instance
       regex:  '(.*):\d+'
       replacement: "${1}"

  - job_name: 'oracle-tab'
    scrape_interval: 6h
    scrape_timeout: 120s
    metrics_path: /metrics
    params:
      tablerows: [true]
      lobbytes: [true]
    static_configs:
      - targets:
         - oracle.host.com:9161
    relabel_configs:
     - source_labels: ['__address__']
       target_label: instance
       regex:  '(.*):\d+'
       replacement: "${1}"

  - job_name: 'oracle-ind'
    scrape_interval: 6h
    scrape_timeout: 120s
    metrics_path: /metrics
    params:
      tablebytes: [true]
      indexbytes: [true]
    static_configs:
      - targets:
         - oracle.host.com:9161
    relabel_configs:
     - source_labels: ['__address__']
       target_label: instance
       regex:  '(.*):\d+'
       replacement: "${1}"

export NLS_LANG=AMERICAN_AMERICA.UTF8
/path/to/binary -configfile=/home/user/oracle.conf -web.listen-address :9161

Usage

Usage of ./prometheus_oracle_exporter:
  -accessfile string
    	Last access for parsed Oracle Alerts. (default "access.conf")
  -configfile string
    	ConfigurationFile in YAML format. (default "oracle.conf")
  -indexbytes
    	Expose Index size for any Table (CAN TAKE VERY LONG)
  -lobbytes
    	Expose Lobs size for any Table (CAN TAKE VERY LONG)
  -logfile string
    	Logfile for parsed Oracle Alerts. (default "exporter.log")
  -tablebytes
    	Expose Table size (CAN TAKE VERY LONG)
  -tablerows
    	Expose Table rows (CAN TAKE VERY LONG)
  -web.listen-address string
    	Address to listen on for web interface and telemetry. (default ":9161")
  -web.telemetry-path string
    	Path under which to expose metrics. (default "/metrics")

Grafana

In The folder Grafana are examples of my used Dashboards

Overview

Tablespace

Transfers

Transfers RAC

Errors